package com.societyGames.asteroidExercises
{
	public class IntCastExpression implements INumberExpression
	{
		private var _right:INumberExpression;
		
		public function IntCastExpression(xml:XML)
		{
			if (xml.children().length() != 1)
			{
				throw new ArgumentError("IntCastExpression requires one child.");
			}
			this._right = Parser.parse(xml.children()[0]);
		}
		
		public function toString():String
		{
			return "int(" + Object(this._right).toString() + ")";
		}
		
		//INumberExpression-->
		public function evaluate():Number
		{
			return int(this._right.evaluate());	
		}
		//<--INumberExpression
	}
}